After Middlewares

How to create After Middlewares

We can create route-specific After Middlewares, which will be executed after the Global middlewares, Route Set middlewares, Route-specific middlewares, and the Request, respectively. See the example below:

func main() {
  server := tupa.NewAPIServer(":6969", exampleManager)
  server.New()
}

func exampleManager() {
  tupa.AddRoutes(nil, SampleRouteManager)
}

func AfterMiddlewareTest(next tupa.APIFunc) tupa.APIFunc {
  return func(c *tupa.TupaContext) error {
    slog.Info("AfterMiddlewareTest -> after route middleware")
    return next(c)
  }
}

func MiddlewareSampleRoute(next tupa.APIFunc) tupa.APIFunc {
  return func(c *tupa.TupaContext) error {
    catsCtxKey := "ctxcats"
    ctxMsg := "context of someone interested in cats"

    slog.Info("MiddlewareSampleRoute -> specific route middleware")

    newCtx := context.WithValue(c.GetCtx(), catsCtxKey, ctxMsg)

    c.SetContext(newCtx)

    return next(c)
  }
}

func SampleRouteManager() []tupa.RouteInfo {
  return []tupa.RouteInfo{
    {
      Path:   "/param",
      Method: "GET",
      Handler: func(c *tupa.TupaContext) error {
        slog.Info("hello world")
        c.SendString("Hello world")

        return nil
      },
      Middlewares:      []tupa.MiddlewareFunc{MiddlewareSampleRoute},
      AfterMiddlewares: []tupa.MiddlewareFunc{AfterMiddlewareTest},
    },
  }
}

This way, we can easily create route-specific after middlewares and add as many as we need to our request.